If r:regex does not match, only return 'false', don't try to create error...

If r:regex does not match, only return 'false', don't try to create error messages, because there should not be any - it's either match or no match here at this point.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1434065 13f79535-47bb-0310-9956-ffa450edef68